扁平扇形喷嘴的设计研究

Research on the Design of Flat Fan Nozzles

对侧向V型狭缝式扁平扇形喷嘴的内部结构参数设计方法进行了研究。使用该方法对一个喷嘴进行了设计,实际使用中喷洒效果符合要求。分析得出了侧向V型狭缝式扁平扇形喷嘴内部结构参数和流量间的关系:喷嘴内圆柱面半径和V型槽底部至内圆柱面轴线的距离必在一族等式约束曲线上取值,且曲线随流量增大而上移;当内圆柱面半径一定时,喷嘴流量随V型槽切口深度增大而非线性增大;当V型槽切口深度一定时,喷嘴流量随内圆柱面半径增大而非线性增大。

The design approach of internal structure parameters of flat fan nozzles with a lateral V-shaped cut was presented. With the proposed approach, a flat fan nozzle was designed and its spray effect accords with the demands. The relationship between internal structure parameters and the flow rate of a flat fan nozzle with a lateral V-shaped cut was analyzed. The radius of internal cylinder and the distance between the bottom of V-shaped cut and the axis of internal cylinder achieved their values on a group of curves. The curve moved upward as the flow rate increased. While the radius of internal cylinder was constant, the flow rate had a nonlinear increase as the depth of the V-shaped cut increased. While the depth of the V-shaped cut was constant, the flow rate had a nonlinear increase as the radius of in- ternal cylinder increased.